Morra, Simone, Arizzi, Mariaconcetta, Allegra, Paola, La Licata, Barbara, Sagnelli, Fabio, Zitella, Paola, Gilardi, Gianfranco, Valetti, Francesca, "Expression of different types of [FeFe]-hydrogenase genes in bacteria isolated from a population of a bio-hydrogen pilot-scale plant", International Journal of Hydrogen Energy, 2014